Binding attachment for sewing-machines.



A. RONTKE.

BINDING ATTACHMENT FOR SEWING MACHINES,

APPLICATION FILED FEB-10.1912.

1,150,627 Patented Aug. 17, 1915.

WlT/VESSES: INVENTOR ,p y 17 c/glbartfioiz/i/ia I BY V A TTOR/VEV cor-(mam FMNOURAFH (10., WASHINGTON. D. c

FFQ.

ALBERT RONTKE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, CORPORATION OF NEW JERSEY.

BINDING ATTACHMENT FOR SEWING-MACHINES.

Application filed February 10, 1912.

To all whom it may concern Be it known that I, ALBERT RoNTKE, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Binding Attachments for Sewing-Machines, of which the tollowing is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements 1n binding attachments for sewing machmes,

and has for its object to provide simple andconvenient means for guiding binding about the corners of angularly arranged edges of a body fabric, and to this end there is provided a braid-guiding finger which, when the body fabric is turned to present to the binding an angularly formed edge, acts to lead said binding at a correspondingangle.

In the accompanying drawings illustrating the invention, in the several figures of which like parts are similary designated, Figure 1 is a plan view, in perspective, of the front end portion of a sewing machine bed-plate provided with one form of commonly employed binder head, and the throat or needle plate commonly used in connection with said binder-head, together with the braid-guiding finger, the latter being shown in its inoperative position with respect to said binder-head. Fig. 2is a plan view of the binder-head, throat or needle plate and the braid-guiding finger shown in Fig. 1, said finger being shown in effective relationship with the binder-head. Fig. 3 is a view substantially the same as Fig. 2, except that the fabrics are included, they being shown in full lines in their positions for continuing the binding operation on an edge arranged at an angle to the previously bound edge. Fig. 4 is a view showing the arrangement of the braid or binding at the intersection of the transversely arranged edges of the body fabric.

The invention is shown as applied to that class of binding attachments represented by United States Patent No. 273,602, issued March 6, 1883 to W. Pretty, Jr., and in connection with one form of commercial fourmotion feed sewing machine, but as it relates only to the means for arranging the braid about the corner formed by the intersecting angles of a body fabric, only such reference will be made to the well-known Specification of Letters Patent.

Patented Au 17, 1915. Serial No. 676,771.

parts of the sewing machine and binderead as is deemed necessary for an understanding of its application.

Referring to the figures, 1 represents the bed-plate of a sewing machine, 2 the throat or needle plate, 3 and 4 front and back sllde plates, respectively, 5 a needle-bar provided with a needle 6, 7 a feed-dog and 8 a cloth-presser-carrying bar to the lower end of which is secured a shank 9 of one form of commonly-employed cloth-presser (not shown).

10 represents a binder-head provided with a base 11 which is secured by screws, as 12, to the slide plate 4 and, as is well understood, the braid or binding 13 is first passed through a braid-guide opening 14, and as it passes over the walls 15 and through the U shaped opening 15 in a direction transverse to the opening 14 (see Fig. 3), it is inverted in a manner common to that class of binder-heads represented by the patent above referred to, the folded edge of the braid being guided in the direction of the feed of the fabric by the wall 15 of said U-shaped opening.

The braidguiding finger comprises a plate 16, pivotally mounted on the plate 4: by a screw 17, and carries at its forward end upper and lower guiding members 18 and 19, respectively. Said members are spaced sufficiently to allow the body fabric 20 to pass between them (see Fig. 3) and are held free of the delivery end of the binder-head a distance sufiicient to prevent interference with the travel of the binding.

To facilitate the threading of the binding through the binder-head, the braid-guiding finger is herein shown as adjustable, but it is evident from the nature of the construc tion that said finger might form a permanently secured part of the binding attachment.

In effecting the product represented by Fig. 4, assuming that the stitching and binding operations have proceeded along the edge 21 to the point 22, the operator stops the machine with the needle out of the fabrics and, by the employment of a suitable hand lever or manually operated treadle, slightly elevates the cloth-presser, thus leav ing the fabrics free to be moved from their dotted line positions to their full line 0- sitions (Fig. 3), such movement of the fabrics causing the braid or binding to be drawn over the free ends of the members 18 and 19, which latter also act to maintain the right angle turn of the binding until the commencement of the stitching operation,

the turning action of the fabrics causing.

said members to form the fold 24:.

Claims 1. In a binding attachment for sewing machines, the combination with a binderhead provided with a braid-guide opening arranged transversely of the line of the seam, the delivery end of said binder-head being provided with inclined walls over which the braid is inverted, of a braidguiding finger comprising upper and lower guiding members between which the fabric being bound passes, the free end of said finger being located at the rear of the line of the needle actuation and at one side of the line of the seam and acting to hold the folded edge of the braid in normal relationship with the edge of said fabric when the latter and the braid are positioned to continue the binding operation at an angle to the previously bound edge.

2. In a binding attachment for sewing machines, the combination with a binderhead provided with a braid-guide opening arranged transversely of the line of the seam, the delivery end of said binder-head being provided with inclined walls over which the braid is inverted, of an adjustably mounted braid-guiding finger comprising upper and lower guiding members between which the fabric being bound passes, the free end of said finger being located at the rear of the line of needle actuation and at one side of the line of the seam, and acting to hold the folded edge of the braid in normal relationship with the edge of said fabric when the latter and the braid are positioned to continue the binding operation at an angle to the previously bound edge.

3. In a binding attachment for sewing machines, the combination with a base-plate,

a binder-head mounted on said base-plate and provided with a braid-guide opening arranged transversely of the line of the seam, the delivery end of said binder-head being provided with inclined walls over which the braid is inverted, of an adjustably mounted braid-guiding finger comprising upper and 7 ALBERT RONTKE.

Witnesses ABBm M. DONIHIEE, WM. F. HICKEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

